ROLAND E-4 | Voice Tweaker | Aira Compact Vocal Effector & Looper

E-4 VOICE TWEAKER

A VOCALIST’S BEST FRIEND

The E-4 Voice Tweaker is an outrageously jammable box of fun that harmonizes, auto-pitches, vocodes, loops, and glitches your voice and anything else you feed it. Flip through hands-on controls to manipulate the sound, and chain in AIRA Compacts and other electronic instruments and let them ride in perfect sync.

INSPIRING ROLAND VOCAL PROCESSING

The E-4 combines powerful voice transformer tools and standard vocal effects with a tactile interface that’s meant to be played. This lean, mean machine puts a treasure trove of top-quality processing in a go-everywhere gadget that’s endlessly enjoyable and amazingly affordable.

HARMONIC EXPLORER

Take your singing to the next level with automatic harmony effects. Set the key and chord voicing on the fly and bring head-turning flair to any song. And with Auto Pitch, you can dial in everything from subtle tuning fixes to the hard-tuned sounds heard in mainstream pop tracks.

LOOP AND SCATTER

Turn one voice into an entire orchestra using the 24-second looper. Overdub layer after layer with the E-4's effects to create wild, vocal-driven rides. Then slice and dice with the expressive Scatter knob, which chops your sound into colorful bits that you control with a twist. 

CHANNEL YOUR INNER ROBOT

Use direct-access tools to instantly change your vocal gender, conjure sounds from outer space, or transform yourself into a mechanical persona (good or evil is up to you). There’s also a powerful vocoder, which you can drive from a large pool of onboard synth waveforms, the E-4’s pitch functions, or an external MIDI keyboard for an endless variety of textures.

LINK UP AND GO

Connect a handheld mic to the front input for performing, or use a gaming headset or the inline mic on your earbuds to bring fresh vocal fun to your next livestream or podcast. Sync with other AIRA Compacts like the T-8 Beat Machine and J-6 Chord Synthesizer to expand your range. Or interface with computer DAWS, mobile music apps, and hardware instruments via USB-C or MIDI. 

EVERYWHERE AT ONCE

The E-4 creatively accentuates vocals anytime and anywhere. The lithium-ion battery provides up to 3.5 hours of power per charge, and the rugged Roland build will support inspired magic and mayhem for a long, long time.

SPECIFICATIONS

Effect Type

• AUTO PITCH
• HARMONY
• VOCODER
• PITCH
• FORMANT
• SCATTER
• REVERB
• LOOPER

Maximum Recording Time

• Approximately 24 seconds

Display

• 7 segments, 4 characters (LED)

Connectors

• SYNC (IN, OUT) jacks: Miniature phone type
• MIX (IN, OUT) / HEADSET jacks: Stereo miniature phone type (Stereo, CTIA)
• MIDI (IN, OUT) jacks: Stereo miniature phone type
• MIC IN jack: Stereo phone type USB port:
• USB Type-C® (Audio, MIDI)

Power Supply

• Rechargeable lithium-ion battery
• Obtained via USB port (USB bus power)

Current Draw

• 500 mA

Expected battery life under continuous use

• Approx. 3.5 hours * These figures will vary depending on the actual conditions of use.

Expected battery charging time

• Approx. 3 hours * To charge the unit, use the USB port of a computer or a commercially available USB power supply adaptor (5 V, 500 mA or higher).

Accessories

• Leaflet ”Read Me First”
• USB Type-C to USB Type-A cable

SIZE AND WEIGHT

Width

• 188 mm
• 7-7/16 inches

Depth

• 106.5 mm
• 4-1/4 inches

Height

• 41.7 mm
• 1-11/16 inches

Weight (including batteries)

• 290 g 11 oz